Managing Serviceguard Seventeenth Edition, First Reprint December 2009

to agile addressing when you upgrade to 11i v3, though you should seriously consider
its advantages.
For instructions on migrating a system to agile addressing, see the white paper Migrating
from HP-UX 11i v2 to HP-UX 11i v3 at http://docs.hp.com.
NOTE: It is possible, though not a best practice, to use legacyDSFs (that is, DSFs
using the older naming convention) on some nodes after migrating to agile addressing
on others; this allows you to migrate different nodes at different times, if necessary.
For information on migrating cluster lock volumes to agile addressing, see “Updating
the Cluster Lock Configuration” (page 329).
For more information about agile addressing, see following documents at
http://www.docs.hp.com.:
• the Logical Volume Management volume of the HP-UX System Administrator’s Guide
(in the 11i v3 -> System Administration collection on docs.hp.com)
• the HP-UX 11i v3 Installation and Update Guide (in the 11i v3 -> Installing
and Updating collection on docs.hp.com)
• the white papers
— The Next Generation Mass Storage Stack (under Network and Systems
Management -> Storage Area Management on docs.hp.com)
— Migrating from HP-UX 11i v2 to HP-UX 11i v3
— HP-UX 11i v3 Native Multi-Pathing for Mass Storage
See also the HP-UX 11i v3 intro(7) manpage, and “About Multipathing” (page 45)
of this manual.
Examples of Mirrored Storage
Figure 3-20 shows an illustration of mirrored storage using HA storage racks. In the
example, node1 and node2 are cabled in a parallel configuration, each with redundant
paths to two shared storage devices. Each of two nodes also has two (non-shared)
internal disks which are used for the root file system, swap etc. Each shared storage
unit has three disks, The device file names of the three disks on one of the two storage
units are c0t0d0, c0t1d0, andc0t2d0. On the other, they are c1t0d0, c1t1d0,
andc1t2d0.
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